Energy change in a chemical reaction is represented by the symbol __________________.Question 4AnswerA.HB.ΔTC.ΔHD.ΔE

ΔH is _____ for an exothermic reaction.

A chemist measures the energy change ΔH during the following reaction:2NH3(g)→N2(g)+3H2(g) =ΔH160.kJUse the information to answer the following questions.

When energy is absorbed, ΔH is _____.

If ΔG<O for a chemical reaction, then the reaction is _____.Group of answer choicesexergonicendergonicNext

ΔH is positive for what type of reactions?Question 1AnswerA.ExothermicB.OxidationC.DisplacementD.Endothermic